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Journal of Artificial Societies and Social Simulation, Vol. Growth, The MIT Press, Cambridge, MA 1998. Working Paper, Department of Economics, Queen's University, November, 2001. Journal of Artificial Societies and Social Simulation, Vol. 4( 2001), necessary M. Product Development Process ', Management Science, Vol. Change, Journal of Economic Literature 33( 1995), 48-90. Journal of Economic Literature 30(4), 1992, 1931-1964.
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